NIELIT 2022 Feb Scientist D - Section D: 24

Question

If $+$ stands for division; $\times$ stands for addition; $-$ stands for multiplication; $\div$ stands for subtraction, which of the following is correct ?

1. $15 \div 5 \times 2 – 6 + 3 = 28$
2. $15 \times 5 + 2 – 6 \div 3 = 56.5$
3. $15 + 5 – 2 \div 6 \times 3 = 3$
4. $15 – 5 + 2 \times 6 \div 3 = 41$

 

• A. $1$
• B. $2$
• C. $3$
• D. $4$

Answer 1

According to the given information:

+	÷
-	*
*	+
÷	-

 

1. $15-5+2\times6\div3=15-5+12\div4\implies15-5+3\implies13\neq 28$
2. $15+5\div2\times6-3=15+2\times6-3\implies15+12-3\implies24\neq56.5$
3. $15\div5\times2-6+3=3\times2-6+3\implies6-6+3\implies3=3$
4. $15\times5\div2+6-2=75\div2+6-3\implies37+6-3\implies43-3\implies40\neq 41$

Option (C) is correct.